Mactrem BK-03 Photography Camera Tripod Ball Head Ballhead+Quick Release Plate with Gradienter High-quality all-metal ball head, the spheres diameter is 36mm, super machining, multi oxidation treatment on the surface, with a very smooth hand feel and excellent durability Three independent control knob, adjust each different rotation angle of the head separately, precisely control every adjustment of the ball head Removable quick-release plate, comes with 1/4 screw, suitable for all SLR cameras; the ball head comes with a 3/8 screw hole at the bottom, can be widely applied to various professional tripods This ball heads can withstand heavy loads, lock solidly, and move smoothly made from black anodized aluminum